The acquisition has increased ACU's assets by over $20 million and expanded its membership from 50,875 to nearly 54,000, according to a ACU press release.

"We're honored to have been chosen as a merger partner with Milestone Credit Union," Steve Swofford, Alabama Credit Union president said in a statement. "The partnership will benefit both memberships in so many ways."

The terms of the acquisition were not disclosed, but ACU said it will operate Milestone's two branches in Fultondale and inside the main Birmingham Post Office, and has employed the credit union's staff in full.

Milestone Credit Union members voted in September to merge the credit union with ACU.

Based in Tuscaloosa, ACU has assets of $550 million and 24 offices across Alabama, including in five Mobile County.